DEVELOPMENT OF GEOMETRY PROBLEMS ON THE SCALE OF PARTIAL CREDIT MODELS BASED ON MATHEMATICAL LITERACY IN JUNIOR HIGH SCHOOLS IN EAST KALIMANTAN

Abstract

This study aims to produce a product as a Geometry test device in scaling partial credit model (PCM) based on mathematical literacy at the junior high school level. This development research uses the ADDIE model with the population of junior high school students in the East Kalimantan region. To obtain the sample size using purposive sampling according to the district/city area at the school level. The sample size is 346 students from five state junior high schools. Preparation of mathematical literacy-based test instruments includes 40 items. The process of preparing test instruments through a small trial (15 students), which is also equipped with a questionnaire to get input from students. In the implementation of the subsequent trial using a larger subject (50 students). Before and after the trial, the test instrument was validated by three validators. Analysis of research data using the Quest and SPSS application programs. The results show that the whole item is fit against the PCM model (0.7≤INFIT MNSQ≤1.33). Most (92.5%) people are also fit for the model. Most persons (92.5%) are also fit for the model. Each question has four options so there are four levels of difficulty. Each question has four options, so there are four levels of difficulty. The earliest level of difficulty has a very easy category. (b≤–2). However, at the next level of difficulty, it is in the category of easy, medium, and difficult (–2≤b≤ +2). The reliability coefficient of the instrument has a moderate category (0.57). All items fit against the model, so they precisely measure the target so that all items are valid. The results of factor analysis on the Kaiser-Meyer-Olkin coefficient of 0.615 (Sig.=0.000) support that condition. Thus, geometric instruments that are research products can be used further with some improvements.